It is now well-known that BBM has the weakest security out of all messaging apps on the market, yet BlackBerry/TCL include it on all devices.
It almost seems counter-intuitive that "the most secure Android smartphone" comes with the least secure messaging app. If there is one big hole on a BlackBerry device, it's BBM.
I know a lot of people still think BBM is secure, but right now, it's a huge hole in the bucket.
Just my thoughts.